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[23.128.96.35]) by mx.google.com with ESMTPS id j5-20020a170903028500b001c7374da019si3479801plr.13.2023.10.04.03.03.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Oct 2023 03:03:09 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.35 as permitted sender) client-ip=23.128.96.35; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=nHrgxTiR; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.35 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by groat.vger.email (Postfix) with ESMTP id B8BF48266264; Wed, 4 Oct 2023 03:03:06 -0700 (PDT) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.10 at groat.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233002AbjJDKDA (ORCPT + 99 others); Wed, 4 Oct 2023 06:03:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52818 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232813AbjJDKC7 (ORCPT ); Wed, 4 Oct 2023 06:02:59 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 742AE83 for ; Wed, 4 Oct 2023 03:02:56 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2D0B5C433C7; Wed, 4 Oct 2023 10:02:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1696413776; bh=i6Mni9W0l9dpI1XoYC4wjLOEG3ztUx3lg98F4Pkk/Q8=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=nHrgxTiR2U1OakAgiKgKo94aKU72TZgNkZ95tWP+OmPIeTmN/pvN/JNKQj5e93G4u sELhrOTtdxE9CNnMr7S6EZ0RTOnxxpVGkY/279gzhUt3VZIQWq4MnGsPPVwWYJMvaJ cWdP4ZMIkG3L018MzQTxwcNuls7TpUODQLK9wW85M1dw14etl6rjMr3UaonjYMGjQ6 nnaUwngCYRkzKmyUNda8LCRgXsLV8wGsenDd6wChzmxtd1xVZyCfz3HJJgjfYNW/os bHSGz4vIjB20BYLIdgAZ0zzuR4028CKz+rHArNNvTjVUA5mq/G2WPwOb0RaCP9io4w AOqkiz/vr1a9w== Message-ID: <3fbe67a4-225c-14c1-cb5a-3f667ad80b0e@kernel.org> Date: Wed, 4 Oct 2023 12:02:52 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.15.1 Subject: Re: [PATCH V3] tracing/timerlat: Hotplug support for the user-space interface To: Steven Rostedt Cc: Masami Hiramatsu , linux-trace-kernel@vger.kernel.org, linux-kernel@vger.kernel.org References: <20231003210309.4335307d@gandalf.local.home> Content-Language: en-US, pt-BR, it-IT From: Daniel Bristot de Oliveira In-Reply-To: <20231003210309.4335307d@gandalf.local.home> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-2.7 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,MAILING_LIST_MULTI,NICE_REPLY_A, SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on groat.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (groat.vger.email [0.0.0.0]); Wed, 04 Oct 2023 03:03:06 -0700 (PDT) On 10/4/23 03:03, Steven Rostedt wrote: > On Fri, 29 Sep 2023 17:02:46 +0200 > Daniel Bristot de Oliveira wrote: > >> The osnoise/per_cpu/CPU$/timerlat_fd is create for each possible >> CPU, but it might create confusion if the CPU is not online. >> >> Create the file only for online CPUs, also follow hotplug by >> creating and deleting as CPUs come and go. >> >> Fixes: e88ed227f639 ("tracing/timerlat: Add user-space interface") > > Is this a fix that needs to go in now and Cc'd to stable? Or is this > something that can wait till the next merge window? We can wait for the next merge window... it is a non-trivial fix. -- Daniel > -- Steve